. >> and i'm jim handly. do you drive with one? the national highway traffic safety administration says cars, trucks and suvs might have fake air bags. and the owners might not even know. >> tony explains what you need to know to determine if your car could be affected by the problem. >> reporter: it doesn't happen often, but it's a chance you don't want to take if you have to replace the air bag in your vehicle. severe faults have been found in one-tenth of a percent of air bags replaced outside of car dealership repair shops. >> i want to be clear, this is not a recall. automakers did not make these counterfeit bags, so they are not required to cover the expense of providing drivers with a new one. >> reporter: the counterfeit air bags have all the markings and insignia of major car manufacturers, but the malfunction can be disastrous, from nondeployment to metal shrapnel flying through the area that is a potential for severe injury highly possible. >> safety is our number one priority here at the department of transportation. an